ANT 2000 Study Guide - Quiz Guide: Arboreal Locomotion, Prehensile Tail, Nasal Septum
Document Summary
Suspensory locomotion form of arboreal locomotion or feeding behavior which involves hanging or suspension of the body below or among the branches, rather than moving or sitting on top of the branches. This includes brachiation, climbing, and bridging, and allows larger species to distribute their weight among smaller branches rather than balancing above these weak supports. Ruffed lemurs, spider monkeys, gibbons, and orangutans are examples. New world monkeys: all arboreal, prehensile tail, some species retain claws, less complex social organization, less mobile face. Catarrhines old world monkeys and apes: narrow nasal septum, some terrestrial, tail - but not prehensile, all digits have nails, more complex social organization. Arm swinging; hanging from a branch and moving by alternately swinging from one arm to the other. Lemur prosimians: vision - postorbital bar, smell - longer snout, wet rhinarium, hands/feet - some digits have claws, teeth - high pointed cusps, tooth comb.
